CD8A and neoplasm: Stratification for PD-L1 expression revealed that tumors with positive PD-L1 expression either on tumor or immune cells (TPS/IC ≥ 1%) showed significantly increased infiltration of CD4+- and CD8+ T-cells (p = 0.002/p = 0.0003 for TPS; p < 0.0001/p < 0.0001 for IC) (Figure 4A–D).